/Engine/Source/Runtime/CoreUObject/Public/UObject/PackageResourceManager.h
FOpenAsyncPackageResult ( [TUniquePtr](API\Runtime\Core\Templates\TUniquePtr)< [IAsyncReadFileHandle](API\Runtime\Core\Async\IAsyncReadFileHandle) > && InHandle, EPackageFormat InFormat, bool bInNeedsEngineVersionChecks )